Sheet material toy aircraft



Nov. 14, 1950 R. B. TURNBULL SHEET MATERIAL ToY AIRCRAFT 3 Sheets-Sheetl Filed Dec. 6, 1948 Nov. 14, 1950 R. B. TURNBULL SHEET MATERIAL ToyAIRCRAFT 5 Sheets-Sheet 2 Filed Dec. 6, 1948 Inventor Robe/f B. TurnbullN0V 14, 1950 R. B. TURNBULL 2,529,979

SHEET MATERIAL ToY AIRCRAFT Filed Dec. 6, 1948 5 Sheets-Sheet 5 df/WWmmm Patented Nov. 14, v 1950 UNI-rizo Vsrarss PATENT OFFICE .Robert B.Turnbull, Holly, Mich., assigner of onethird to Eileen M. Turnbull andone-third to John H. Bush, both of Flint, Mich.

Application December 6, 194s, serial No. 63,638

1 Claim. l

This invention relates to novel and useful improvements in the art ofamusement and educational devices.

An object of this invention'is to supply a device which may be made .tovsimulate anv aircraft without the necessity of using glue or otheranalogous fastening elements.

Another object of this invention is to supply a blank having variouscrease lines and creases to form an aircraft of paper construction,which is quick folding into the composite readily and satisfactorilyflyable toy.

Ancillary objects and features of novelty will become apparent to thoseskilled in the art, in following the description of the preferred formof the invention, illustrated in the accompanyingr drawings, wherein:

Figure 1 is a perspective view of the assembled device;

Figure 2 is a plan View of a blank showing initial creases to be madetherein in dotted lines;

Figure 3 is a plan view of the same blank shown in Figure 1, showingfurther crease lines to be made therein;

Figure 4 is a plan view of the blank, showing the same partiallycreased;

Figure 5 is a View showing the blank having other crease lines therein;

Figure 6 is a perspective view of the blank in a partially foldedcondition;

Figures 7, 8 and 9 illustrate further conditions of the blank after ithas been folded even further;

Figure 19, Figure 11 and Figure l2 illustrate the blank in furtheroperational conditions;

Figure 13 is a plan View of a second blank, used as a component of theaircraft shown in Figure 1;

Figure 14 illustrates the two blanks combined;

Figure 15 shows the blanks put together and in condition for finalcreasing.

rhe preferred material of construction of the present invention ispaper. However, it is within the contemplation of the present inventionto utilize other materials, as found appropriate and desirable. It iscontemplated to utilize the eX- posed areas of the completed aircraftfor ad- Vertising purposes.

The folding operations are most important in the construction of thepresent device, the actual materials being simply two blanks composed ofpaper. Accordingly, it is deemed appropriate to initially set forth thefolds and manner of :folding the two blanks in order to fabricate the device shown in Figure 1 and generally indicated by the reference numerallll.

First the rectangular blank indicated generally at I2 is disposed on aflat surface such as a table or the like and corner 2li is folded to aposition so that it is on top 4of corner 22. The blank Vis then creasedas along dotted line 3Q. Then the blank is unfolded. The corner 25 isthen folded upon corner 28 and the blank paper creased as along dottedline 24. The resultant crease marks are diagonal on the blank I2. Theblank is then unfolded, leaving the crease lines 2d and 3Q therein. Whenfolding the blank to form the lines 30 and 24, the blank assumes theshape shown in Figures 4 and 5.

Then, the corners 2li, 22, 26 and 28 are pinched together as shown inFigure 6, the corner 25 overlying'the corner 22, while the corner Zloverlies the corner 28. The blank is creased along its inner edges at 34and 36 respectively, forming crease lines 38 and 4l) (see Figure 3).Dotted lines (see Figures 3 and 7) l2 and 4Q respectively which areprinted on the blank will appear and the corners 2i) and 25 respectivelyare folded downwardly. Accordingly, there will appear printed lines 59and 52 respectively on one of the flaps formed thereby and printed lines54 and 56 respectively on the other flap formed thereby (see Figure 8)It is noted at this point that the creases and folds are made veryfirmly in order that the resulting toy will be of better quality.

Referring now to Figure 9 it Will be seen that the newly formed cornerlid and the newly formed corner 62 are folded forwardly along the lines5l! and 54 rmly leaving exposed only a portion of the printed lines 52and 55 respectively. Then, the last operation is undone, leaving again ablank as seen in Figure 8. The dotted lines 52 and 55 respectively arethen used as folding centers and a blank similar to that shown in Figurel0 is produced. The folds are made crisply and accurately and thenunfolded until a blank shown in Figure 8 is again attained.

Then the paper is grasped by the lingers in order to form a sharp edgeill and then folded forwardly, creasing along the edges firmly. Thisconstruction is seen operationally in Figure ll. The finishedconstruction is seen in Figure 12.

Next, 'the substantially rectangular tail piece generally indicated atlll is folded along its longitudinal center crease l2. It is creasedsharply.

The pointed end l@ of the tail piece is then inserted as far as possibleinto the wing, with the creased edge down toward the table or othersupport on which the operation is taking place. It is noted that thepointed portion 'lll conforms to the apex of the wing section, thisconstruction being seen best in Figure 14. The nose section is then bentdownwardly along the line 18 (see Fig-ure 3), not showing in Figure 14since it is on the reverse side of the blank.

Thus, the resulting structure is seen in Figure 15 and after appropriatesmoothly curved contours are formed in the paper, the resulting deviceis seen in Figure 1. tions may be curved smoothly, as found desirable.`

It is seen that nothing more is required to hold the tail section inplace within the wing yand nose sections than the frictional bondbetween the said tail section and folded substantially square blank Itis apparent that certain variations may be made without departing fromthe spirit of the invention. Accordingly, limitation is sought only inaccordance with the scope of the following claim.

Having described the invention, what is claimed as new is:

In a toy aircraft, a first and a second flat blank of material, saidirst blank being substantially square, creases extending diagonally ofthe blank The wing and tail secand said blank being folded along saidcreases to form a triangular shaped blank of four thicknesses ofmaterial, and said triangular shaped blank being formed with creases intwo of the thicknesses of material to form a square shaped memberjuxtaposed on the remaining two thicknesses of triangular blank, saidremaining twoY thicknesses forming wings for the aircraft, and saidsquare shaped member having tucks therein to form a nose section, thesaid remaining v two thicknesses having a fold extending thereandfuselage.

kROBERT B. TURNBULL.

REFERENCES CITED The following references are of record in the file ofthis patent:

FOREIGN PATENTS Country v Date France Mar. 31, 1920 Number

